Unfortunately, it's still the HERM100
O2 has 'sensibly' gone with the original version of the Hermes - the HERM100. This is known to be problematic in some batches, which is why i-Mate went with the HERM200 and T-Mobile (who gave me my device) continued to upgrade the revisions it offered to its customers, settling on the latest version, the HERM300.
O2 seem to have been VERY reactive in this decision - I pestered them on contract renewal (September last year) about offering the Hermes, and I had mixed signals, mainly along the lines of "it's somewhat sure that it's coming, but we don't know when." So, I (happily) jumped ship to T-Mobile, and I've been deliriously happy ever since.
That O2 hasn't even offered the latest revision to its customers is a bit disappointing, they're in a prime position to do this!
Oh well, roll on the Kaizer :D